ITMC Pneumatic Systems 2

Question 1

What is the primary purpose of an air receiver tank in a pneumatic system?

Accepted Answer

To store compressed air and dampen pressure fluctuations

Answer

An air receiver tank stores a reserve of compressed air and smooths out pressure pulsations from the compressor.

Question 2

Which type of pneumatic actuator produces rotary motion?

Accepted Answer

Vane-type air motor

Answer

A vane-type air motor converts compressed air pressure into continuous rotary mechanical motion.

Question 3

A pneumatic system shows rapid pressure drop when no actuators are active. The most likely cause is:

Accepted Answer

System leaks in fittings or tubing

Answer

Rapid pressure loss at rest almost always indicates air leaks in fittings, tubing, or valve seals.

Question 4

What does the ISO symbol for a normally-closed 3/2 directional control valve indicate?

Accepted Answer

3 ports, 2 positions, exhaust blocked at rest

Answer

A 3/2 normally-closed valve has 3 ports and 2 positions, with the output port blocked (no flow) in its rest state.

Question 5

Which maintenance task is performed MOST frequently on a compressed air system?

Accepted Answer

Draining moisture from receiver tanks and filters

Answer

Draining condensate from receiver tanks and filter bowls is a daily or shift-level task to prevent water damage to components.

(ITMC) Industrial Technology Maintenance Certification Practice Test